基于新型镁基复合材料的体育器材组织与性能研究

Study on the Structure and Performance of Sports Equipment Based on New Magnesium-based Composites

新型复合材料在体育器材中有着广阔的应用前景,好的体育器械有利于提高运动员的竞技成绩,推动全民运动的发展。将10vol%B4C增强体添加到Mg-3Al-0.1Ti-0.3Mn-1Zn镁合金中,通过采用搅拌摩擦法以及特质导管辅助熔炼制成了适用于体育器材的新型镁基复合材料,并对此材料进行了的OM、XRD、SEM分析以及腐蚀试验和拉伸实验。实验结果显示:镁基复合材料由Mg17Al12、α-Mg以及B4C组成,在室温与高温环境中有着较好的力学性能与抗腐蚀性能;在室温下,该材料的拉伸强度为428MPa,伸长率为12.5%。相较室温,500℃的拉伸强度只减少了9%,与AZ31镁合金相比,腐蚀电位正移了285mV。实验所制的镁基复合材料在拉伸、抗腐蚀性能上具有充足的优势,适用于制造体育器材,使体育器材的功用得到最大程度的发挥,增长使用寿命。

New composite materials have broad application prospects in sports equipment,and good sports equipment is helpful to improve athletes 'competitive performance and promote the development of national sports. The addition of 10vol % B4C reinforcement to the Mg-3Al-0.1 Ti-0.3 Mn-1Zn magnesium alloy has been made into a new type of magnesium matrix composite material suitable for sports equipment by the use of friction stir method and characteristic catheters assisted smelting. The analysis of OM, XRD,SEM,corrosion test and tensile test were carried out. The experimental results show that the magne. sium matrix composites are composed of Mg17Al12,α-Mg and B4C,and have good mechanical properties and corrosion resistance at room temperature and high temperature. At room temperature, the tensile strength of the material is 428 Mpa and the elongation is 12.5%. Compared to room temperature, the tensile strength of 500℃ is only 9% less, and the corrosion potential is shifting by 285 mV compared to the AZ31 magnesium alloy. The magnesium-based composites made by the experiment have sufficient advantages in tensile and corrosion resistance properties. They are suitable for the manufacture of sports equipment,so that the function of sports equipment is maximized and the service life is increased.